Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




Number 1 is the only value possible in cell (5,1).









Number 6 is the only value possible in cell (7,3).









Number 9 is the only value possible in cell (1,3).









Number 4 is the only value possible in cell (2,3).









For row 2, number 9 is only possible in cell (6,2)









For row 5, number 9 is only possible in cell (5,5)









For row 4, number 6 is only possible in cell (4,4)









For box 6, Number 7 is only possible in cell (9,4)









For column 6, Number 7 is only possible in cell (6,5)









For row 2, number 1 is only possible in cell (3,2)









For row 7, number 1 is only possible in cell (8,7)









For row 5, number 1 is only possible in cell (4,5)









For row 6, number 1 is only possible in cell (7,6)









For row 8, number 1 is only possible in cell (6,8)









For column 9, Number 5 is only possible in cell (9,2)









For column 6, Number 4 is only possible in cell (6,6)









For box 8, candidates for 3 are all in row 9, so you can remove candidates from other blocks.









For box 6, candidates for 2 are all in column 8, so you can remove candidates from other blocks.









Naked Pair for 2 and 3, can remove these as candidates from other cells.









For row 8, number 3 is only possible in cell (8,8)









For box 9, candidates for 2 are all in column 9, so you can remove candidates from other blocks.









Naked Pair for 4 and 8, can remove these as candidates from other cells.









Hidden Pair for 2 and 3, can remove other candidates from these cells.









For row 4, number 8 is only possible in cell (5,4)









Number 2 is the only value possible in cell (4,6).









Number 3 is the only value possible in cell (6,4).









Number 2 is the only value possible in cell (3,4).









Number 3 is the only value possible in cell (3,1).









Number 2 is the only value possible in cell (7,1).









Number 3 is the only value possible in cell (7,2).









Number 5 is the only value possible in cell (8,4).









Number 5 is the only value possible in cell (2,5).









Number 2 is the only value possible in cell (8,5).









Number 8 is the only value possible in cell (2,6).









Number 3 is the only value possible in cell (1,6).









Number 5 is the only value possible in cell (5,6).









Number 8 is the only value possible in cell (4,8).









Number 9 is the only value possible in cell (3,8).









Number 7 is the only value possible in cell (7,8).









Number 6 is the only value possible in cell (2,8).









Number 7 is the only value possible in cell (2,1).









Number 4 is the only value possible in cell (4,1).









Number 8 is the only value possible in cell (9,1).









Number 6 is the only value possible in cell (1,1).









Number 8 is the only value possible in cell (1,2).









Number 2 is the only value possible in cell (2,2).









Number 7 is the only value possible in cell (4,2).









Number 4 is the only value possible in cell (8,2).









Number 4 is the only value possible in cell (9,7).









Number 8 is the only value possible in cell (3,7).









Number 5 is the only value possible in cell (1,8).









Number 2 is the only value possible in cell (9,8).









Number 7 is the only value possible in cell (1,9).









Number 4 is the only value possible in cell (3,9).









Number 3 is the only value possible in cell (5,9).









Number 2 is the only value possible in cell (6,9).









Number 9 is the only value possible in cell (7,9).









Number 8 is the only value possible in cell (8,9).









Number 6 is the only value possible in cell (9,9).